RFID tag and method for controlling the same
a technology of radio frequency identification and control unit, which is applied in the direction of near-field systems using receivers, read/write/interrogation/identification systems, instruments, etc., can solve the disadvantage of obtaining the voltage required for driving the eeprom 103 and the control unit 105, and the difficulty of transmitting data to the rfid reader
Inactive Publication Date: 2009-03-05
ELECTRONICS & TELECOMM RES INST
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Benefits of technology
[0011]An aspect of the present invention provides a Radio Frequency Identification (RFID) tag and a method for controlling the same which may amplify receiving and transmitting signals received / transmitted from / to an RFID reader, respectively, thereby enabling to receive / transmit from / to the RFID reader even at a relatively long distance.
[0012]An aspect of the present invention provides an RFID tag and a method for controlling the same which may amplify the receiving signal and the transmitting signal, thereby improving receive sensitivity at the time of transmitting / receiving of signals at a long-distance.
[0013]An aspect of the present invention provides an RFID tag and a method for controlling the same which may convert an operation mode according to presence / absence of a wake-up signal, thereby minimizing power consumption.
Problems solved by technology
However, in the case where the conventional RFID tag is located far apart from the RFID reader (for example, at least 5 miles), a voltage required for driving the EEPROM 103 and the control unit 105 may be disadvantageously difficult to be obtained.
As a result, the conventional RFID tag has a problem in that data is difficult to be transmitted to the RFID reader located at a relatively long distance due to a relatively weak signal strength.
Method used
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[0026]Reference will now be made in detail to exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. The exemplary embodiments are described below in order to explain the present invention by referring to the figures.
[0027]FIG. 2 is a schematic diagram illustrating an RFID system including an RFID tag according to an exemplary embodiment of the invention, and FIG. 3 is a block diagram illustrating an RFID tag 201 according to an exemplary embodiment of the invention.
[0028]Referring to FIGS. 2 and 3, the RFID tag 201 according to the present exemplary embodiment of the invention includes a receiving antenna unit 301, a circulator 302, an input unit 303, a wake-up determining unit 304, a power unit 305, a switch unit 306, a demodulation unit 307, a control unit 308, a memory 309, a modulation unit 310, an amplifier 311, a power detection unit 312, a gain cont...
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Disclosed are a Radio Frequency Identification (RFID) tag and a method for controlling the same which may receive / transmit data from / to an RFID reader even at a relatively long distance. The RFID tag includes a modulation unit for modulating data requested from an RFID reader to generate a first transmission signal including the modulated data, a transmission amplification unit for amplifying the generated first transmission signal to output a second transmission signal, and a transmission antenna unit for transmitting the outputted second transmission signal to the RFID reader.
Description
CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims the benefit of Korean Patent Application No. 10-2007-0089375, filed on Sep. 4, 2007, in the Korean Intellectual Property Office, the entire disclosure of which is incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a Radio Frequency Identification (RFID) tag and a method for controlling the same which may receive / transmit data from / to an RFID reader even at a relatively long distance.[0004]This work was supported by the IT R&D program of MIC / IITA. [2005-S-106-03, Development of Sensor Tag and Sensor Node Technologies for RFID / USN][0005]2. Description of Related Art[0006]In general, a Radio Frequency Identification (RFID) technology may refer to a technology which may recognize a unique identification of a tagged object via a radio signal to collect, store, process, and trace corresponding information, thereby providing services such as loc...
Claims
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CPCG06K19/0723H04B5/02H04B5/0062H04B5/77H04B5/48G06K19/07
Inventor JUNG, JAE-YOUNGCHOI, WON KYUSON, HAE WONYANG, HOE-SUNGLEE, SANG YEOUNSEONG, NAK SEONLEE, HEYUNG SUBPYO, CHEOL SIG
Owner ELECTRONICS & TELECOMM RES INST